Date: Mon, 19 Mar 2012 00:45:02 +0400 (MSK) From: Dmitry Morozovsky <marck@rinet.ru> To: Steven Hartland <killing@multiplay.co.uk> Cc: mav@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ahci hangs on Supermicro MicroCloud second channel Message-ID: <alpine.BSF.2.00.1203190039230.74471@woozle.rinet.ru> In-Reply-To: <4EB522A5E2744235B0680BAF97F81862@multiplay.co.uk> References: <alpine.BSF.2.00.1203181934540.65171@woozle.rinet.ru> <DF1AA664FAF24CE3BE38746A6F852BE4@multiplay.co.uk> <alpine.BSF.2.00.1203182057380.65171@woozle.rinet.ru> <4EB522A5E2744235B0680BAF97F81862@multiplay.co.uk>
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On Sun, 18 Mar 2012, Steven Hartland wrote: > > different on ada0 and ada1!): > > ada0, MC 50-60 MBps ada1, MC 13-25 MBps > > ada*, 5017 130+ MBps > > > > Could you please post SATA/AHCI BIOS settings from your machines? Thanks a > > lot! > > Just AHCI configured as far as I remember. Microcloud has AFAIR additional settings for delaying disk spin and enablink/disabling hotswap, but mangling these options does not change anything for me > What you mean by MC vs 5017? platform name: MicroCloud vs 5017C-MTF, both based on the same chipset > How are you measuring disk speed? the simplest: dd if=/dev/ada0 of=/dev/null bs=1m count=16k (linear read 16g at the beginning of disk) > What value do you have for sysctl vfs.read_max? default for both cases, 8 -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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